Burglaky protection system



, May 26, 1931. w. SACHS 1,806,953

BURGLARY PROTECTION SYSTEM Filed April 10. 1928 3 Sheets-Sheet l I Q y gQ mm $3, 33 g \3 x FIG'ZI.

% IN VEN TOR:

May 26, 1931. w. sAcHs 1,306,953

BURGLARY PROTECTION SYSTEM Filed Apr-11x10. 1 92s 5 Sheets-Sheet 2 FIG HWITNESSES 56 INVENTOR:

ATTORNEYS. v

5 Sheets-Sheet 3 Filed April 10, 1928 INVENTOR: Wander flaws,

ATTORNEYS Patented May 26, 1931 f UNITED STATES PATENT OFFICE i wannasAons, or LANCASTER, PENNSYLVANIA nunenany rno'rnorron SYSTEMiAppQIicatiOn filed April 10,

This invention relates to systems for prevention of burglary,and'more'particularly to a type useful in banks or other monetaryinstitutions; I v

The purpose of my invention is to enable, in the event of a burglaryattempt, to care for all possible contingencies attendant upon such asituation: in other words, I aim to provide a 'safetysystem whereby theculprit 20 fragmentary view of the approach to a tellers window in abank equipped with my im-v proved protection system. i l

r Fig. II is a transverse sectional view, taken as indicated by thearrows II-II inFig. I.

Fig. III is a plan view of the various parts delineated in FigI.

Figs. IV, V, VI and VII, are fragmentary sectional views showing certaindetails associa-ted withburglar trapping doors fea- 3 tu'red-in myinvention.

' Fig} VIII is a fragmentary detail view showing the means for releasingthe'doors for automatic closure to trap the burglar; and,

Fig. IX shows awirin-g diagram and the various electrically controlledelements em-f' bodied in the system. f

7 With reference "first more particularly to Figs. I, II and III,*10-indicates a partition such as ordinarily employed in banks to set apartthe space occupied bytellers, clerks, etc. Each tellers window, one ofwhich is shown at 11, is equipped with a vertically slidingsash12'embodying a metal frame with a bulletproof glasspanea As shown inFig. II,'the sash is provided at the back with a series of teeth 13,-and is normally held in raised position by a hook catch 14 engaging theuppermost tooth, said catch being fulcrumed'on afixed stud 15; A springpressed detent 16 also-"cooperates with the teeth 1 3 to 1.92s.serigl'no. 268,924.

lock the sash 12 in downposition upon'being released from thecatch l ias hereinafter de scribed. A small area of the floor space im-' mediatelyin front of the tellers window 11 is occupied bya'metallic mat 17w'hichis 5h overhung by a pair of doors 18, which are. swingable onhinges 19 secured to columns- 20 of the partitioning 10, said hingeshaving incorporated springs 19a, see Fig. VI, tending to move the doors1 8 inward or toward 6! I each other. The doors 18 are-constructedfromarmor plate with comparatively small bullet proof sight glasses 18a,and-are nor'-' mally held in the parallel open relation-- shown in fulllines in Figs. I, II and III- against the action of the springs 19a intheir hinges 19, by stopfingers 21. 'llhese stop: fingers 21are-respectively pivoted, as shown at 22 in Fig. VIII, beneath the plate17 and joined at points below their pivots by a 'rod 23 for the purposesof simultaneous actua tion; while their upper ends protrudethroughopenings 24in saidplate'tointercept the doors 18. When releasedto the hinge springs 19a through retraction of the stop fingers 21',-

it will be seen that the doorsif18'will automatically swing to theangularpositions shown in dotted lines'in Fig. III with their free edgescontacting and forming a triangular trap before the tellers window 11.Incidental to such inward movement,-' bolts 25 concealed in the doors 18adjacent their frontal edges, automatically drop into sockets 26 in thefloor plate 17, see FigJIV. The drop of the bolts'25 as just explainedis in- 3 sured through helical springs 27 (Fig.- V) in compressionbetween abutments 28' in the door structures, and circumferential'projec tions or collars 29 on said bolts. The'springs 27 aresufficiently powerful to overcome' the resistance ofsmaller springs 30within the sockets 26 (Fig. IV),'the latter "beingefi'ective to normallyhold plungers31 with their tops flush with the upper surface of theifloor plate 17 as shown in'Fig.'VII. Therplungers 31 are held to truevertical movement by axial guide studs 32 secured in the bottoms of thesockets 26 and provided with-trans= verse pins'33 which extendintormotion limiting slots34: in the plungers- 31. Travel of .9?

the bolts 25 over the top of the floor plate 17 is facilitated throughprovision of rollers 35 at their lower ends, see Fig. IV. To enablesubsequent disengagement from the sockets 26, the locking bolts 25 areequipped with lifting knobs 25a which are accessible from the out sidesof the trap doors 18.

As a convenient means to control release of the window sash 12 and thetrap doors 18 in the event of a burglary attempt, I preferably employelectric means herein shown as having the form of solenoids 35, 36. Byreference to the wiring diagram of Fig. XI, it will be observed that thesolenoids 35, 36 are connected in parallel with conductors 37, 38together with a general alarm means in the form of a bell 37 and anelectrically controlled tripping means 40 for the entrance doors (notshown) to the bank building, which doors may be of the same constructionand operative in the same manner as the trap doors 18. There may ofcourse be additional bells connected to the conductors 37, 38 if desiredor required. Interposed between conductors 37, 38 and the power or linewires shown at 41, 42 having inserted fuses 43, 44 is a three platemagnetic switch 45, the magnet coil 46 of this switch connected in aseparate circuit 47 receiving current from the line wires 41, 42,.saidcircuit being normally open as a consequence of its termination in anoverhead separated contact means 48 located in the tellers enclosure,see Fig. II. This contact means maybe in the form of a false ceilingconsisting, for example, of two spaced bare wire screens conventionallyindicated at 48a, 48b in Figs. II, IX. I may also provide in the tellersenclosure a push button switch 50 (Fig. IX) as an auxiliary means toclose the circuit 47 and also a nor-, mally closed cancelling switch 51functional in a mannerlater on explained.

The operation of my protective system is as follows: Inthe event that ahold-up man presents himself at the front of the tellers window 11 withthe demand that the teller hold up his hands, the latter complying,touches the false ceiling 48 within his enclosure, thereby bringing thescreens 48a 48?) into contact and closing the circuit 47. As aconsequence, the magnet 46 of the switch 45 is energized to effectclosure of the switch contacts for supply of current from the line wires41, 42 to the conductors 37, 38; This action results in sounding of thealarm 37 and energization of the solenoids 35, 36 and 40 with attendantrelease of the tellers window sash 12, which is thereafter held lockedby the detent 16, release of the trap doors 18 to automatically close inupon the burglar and release of the bank doors to close in a likemanner. The hold-up man is thereby made a prisoner and renderedabsolutely helpless against the use of fire arms or other weapons due tothe armored construction of the trap doors 18, while the teller isprotected by the bullet proof glass sash 12 now down over his window 11.With the arrival of help summoned through sounding of the signal 37, theprisoner may be subdued in any suitable manner, for example by throwingof a tear bomb into the trap. To enable subsequent removal of theprisoner, the cancelling switch 51 is opened with consequentde-energization of the magnet coil 46 to permit the bridging contacts ofthe switch 45 to move back to the position illustrated. Upon lifting ofthe locking bolts 525 from the sockets 26 in the floor plate 17 by meansof the knobs 25a, the trap doors 18 may be swung open to the normalposition, and the prisoner apprehended.

Having thus described my inventionI' l. The combination in a burglary.protection system for banks and the like of opposingly-swingablebullet-proof doors at opposite sides of the front of a tellersenclosure, means tending to swing the doors toward each other, means tonormally hold the doors in open position, trip devices controlling thedoor holding means, an associated trip normally retaining a bullet-proofsash elevated at the inner side of the tellers window, and overheadelectric contact means within the tellers enclosure in circuit with thetrips aforesaid and operative to release both doors so as to form atriangular trap and concurrently release the sash for gravity closure.

2. The combination in a burglary protection system for banks and thelike of opposingly-swingable bulletproof doors at opposite sides of thefront of a tellers enclosure, springs tending to swing the doors towardseach other, means to normally hold the doors in open position,automatically actuated bolt means to arrest the doors in closedposition, electric trips controlling the door holding means, anassociated trip normally retaining a bullet-proof sash elevated at theinside of the tellers window, means to lock the sash in lowered positionwhen released, and overhead contact means within the tellers enclosurein circuit with the trips aforesaid and operative to release both doorsto form a triangular trap and concurrently release the sash for gravityclosure.

3. The combination in a burglary protection system for banks and thelike of opposingly swingabl'e bullet-proof doors at opposite sides ofthe front ofa tellers enclosure, springs tending to swing the doorstowards each other, means to normally hold the doors in open position,automatically actuated bolt means to arrest thedoors in closed position,electric trips controlling the door holding means, an associated tripnormally retaining a bullet-proof sash elevated at the inside of thetellers window,'means to lockthe sash in lowered position when released,overhead contact meanswit'hin the tellers enclosure in

